Water tank for a road roller



FIG. 1 is a top and front perspective view of the water tank for a road roller showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevation view thereof; and,

FIG. 5 is a left side elevation view thereof.

The structure shown in broken lines is for environment purposes only and does not form part of the claimed invention. 

CLAIM The ornamental design for a water tank for a road roller, as shown and described. 